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Cisco ONS 15530 Configuration Guide and Command Reference
78-14227-01, Cisco IOS Release 12.1(10)EV2
Chapter3 Initial Configuration
About the Software Configuration Register
Bit 12 and bit 11 in the configuration register determine the data tran smissio n r ate of th e c onso le
terminal. Table 3 -6 shows the bit settings for the four available rates. The factory-set default data
transmission rate is 9600.
Bit 13 determines the system response to a bootload failure. Setting bit 1 3 ( the fact ory defau lt) cau ses
the system to load operating software from bootflash memory after five unsuccessful attempts to load a
boot file from the Flash memory device in slot 0. Clearing bit 13 causes the server to continue attempting
to load a boot file from bootflash indefinitely.
Boot Field Values
The lowest four bits of the configuration register (bits 3, 2, 1, and 0) form the boot field. The order in
which the system looks for system bootstrap information depends on t he bo ot field sett ing in t he
configuration register.
Tab l e 3- 5 Register Settings for Broadcast Address
Bit 14 Bit 10 Address (<net><host>)
0 0 <ones><ones>
0 1 <ones><zeros>
10 <net><ones>
1 1 <net><zeros>
Tab l e 3- 6 Settings for Console Terminal Transmission Rate
Bit 12 Bit 11 Baud Rate
0 0 9600
0 1 4800
1 0 1200
1 1 2400